Single-Row Crossed Roller Slewing Bearings

Single-Row Crossed Roller Slewing Bearings are precision rotary components featuring cylindrical rollers arranged alternately at 90° between two raceways. This crossed roller design provides higher rigidity and moment load capacity compared to traditional ball slewing bearings, making them ideal for applications requiring smooth rotation under combined loads.

Structural Features

Single-row crossed roller slewing bearings feature cylindrical rollers arranged in a single raceway with alternating 90° axes. This unique design allows one bearing to handle axial, radial, and moment loads simultaneously with minimal deflection.

Key structural features:

Crossed roller design – Rollers arranged at 90° alternating angles for multi-directional load capacity
High rigidity – Line contact between rollers and raceways provides 30-50% higher rigidity than ball bearings
Compact structure – Single raceway design saves space while maintaining high load capacity
Forged steel rings – 50Mn or GCr15 material for durability
Hardened raceways – Induction hardened to HRC58-62 for wear resistance
Segmented cage – Brass or steel cage separates rollers and reduces friction
Gear options – External (111/112), internal (113/114), or gearless (110)
Sealing system – Rubber seals prevent contamination

Series code reference:

110 series – Gearless design for external drive
111/112 series – External gear for pinion drive
113/114 series – Internal gear for compact drive

Applications

Single-row crossed roller slewing bearings are widely used in applications requiring high rigidity and precision rotation:

Construction machinery – Cranes, excavators, aerial work platforms
Industrial equipment – Rotary tables, indexing equipment, robotic turntables
Medical equipment – CT scanners, imaging systems, radiation therapy machines
Energy industry – Wind turbine yaw systems, solar trackers
Other applications – Radar antennas, packaging machinery, inspection equipment

Popular Models

Product Specifications

Bearing No.	ID	OD	H	Cor	Mass
110.32.1250	1110	1390	91	3210	350
113.32.1250	1110	1390	91	3210	350
112.32.1250	1110	1390	91	3210	350
114.32.1250	1110	1390	91	3210	350
111.32.1250	1110	1390	91	3210	350
110.32.1400	1260	1540	91	3580	400
112.32.1400	1260	1540	91	3580	400
111.32.1400	1260	1540	91	3580	400
113.32.1400	1260	1540	91	3580	400
114.32.1400	1260	1540	91	3580	400
110.32.1600	1460	1740	91	4120	440
112.32.1600	1460	1740	91	4120	440
111.32.1600	1460	1740	91	4120	440
113.32.1600	1460	1740	91	4120	440
114.32.1600	1460	1740	91	4120	440
111.32.1800	1660	1940	91	4600	500
112.32.1800	1660	1940	91	4600	500
113.32.1800	1660	1940	91	4600	500
110.32.1800	1660	1940	91	4600	500
114.32.1800	1660	1940	91	4600	500

FAQ

What is the advantage of crossed roller over ball slewing bearings?

Crossed roller bearings use cylindrical rollers (line contact) instead of balls (point contact), providing 30-50% higher rigidity and moment load capacity. The alternating 90° roller arrangement allows a single bearing to handle axial, radial, and tilting loads simultaneously with minimal deflection.

How to maintain single-row crossed roller slewing bearings?

Regular maintenance includes: regreasing every 100-200 operating hours, checking bolt torque periodically, inspecting seals for damage, and monitoring for unusual noise or play during operation.

Can your crossed roller bearings replace IKO, THK or SKF?

Yes. We manufacture crossed roller slewing bearings interchangeable with IKO, THK, SKF, Rothe Erde, and other major brands. Please provide original part number or drawing for cross-reference.